<?php
/**
 * UUID
 * tcc1988@163.com
 */
if (!defined('IN_FILE')){ die('Hacking attempt');}
class UUID{
	static function create(){
		mt_srand((double)microtime()*10000);
		$charid = strtoupper(md5(uniqid(rand(), true)));
		$hyphen = chr(45);// "-"
		$uuid = ''
		.substr($charid, 0, 8).$hyphen
		.substr($charid, 8, 4).$hyphen
		.substr($charid,12, 4).$hyphen
		.substr($charid,16, 4).$hyphen
		.substr($charid,20,12);
		return $uuid;
	}
	
}
?>